See below all the current variables and their defaults set in karma css
Just a pointer..
Its worth noting that when defining your own colours or buttons you dont need to copy all of them. You can start with an empty list, the existing ones will be merged in with yours. You will be left with your own and any from the defaults you did not define.
// start with these $colors: (); $buttons: ();
.. literalinclude:: ../scss/_variables.scss :language: scss